I found this map online, shortly after DJ and I completed our shallow water down winder. It is not high enough resolution to read the depth readings, so I sort of just discarded it, and left it on the back burner.....
However, in reopening it, you can see depth contours, which shows that our paddle tracked the shallow water areas !!!
So lesson learnt, you need deeper water for a great down winder !
Conditions were SE about 20 knots, gusting towards 25. Start was east side of the pointy tip of Point Henry (bottom middle of photo), and finish was Geelong Grammar School, just the east of the "Brown Blob" towards top left of picture.
Yeah.. That was us alright.. Right across the sand bar.. 
Pt Cook to St Kilda would be a better option next time on the next good sou'wester.
DJ
Hi DJ,
Those contours make perfect sense to us now !!! We just followed shallow water the whole way ! But we knew that when we were standing up in the water, but we were like 2-3km from the nearest land !
There's a deeper water "finger" towards our finish line, and that was about the area where we had a couple of little runners.
Simon
I could have told you about how shallow that ares is..
Thats where it would be perfect for tanker waves, on the
northern side of the channel. when a ship travels the channel.
it goes from 12-15 m deep to less than 1 m along the edge.
creating 100 m peeling waves at low tide. just need a small
runabout or tinny to get there.
Plane Sailing !
Could have told us !! 
We posted the route, etc, prior to going, and I think you also posted a comment then also. But you did not mention how shallow it could/would be !!
But at least we know now !! I can now read shallow water chop, for future route selection. DJ & I were at the end destination, saying it looked a touch flat.... lessons learnt !
www.seabreeze.com.au/forums/topic.asp?TOPIC_ID=66469
Yep, only warning about fines, not depth !! But we know now.... But Limeburners to Grammar on a decent southerly would actually be a better run, in deeper water. Our route was over the shallowest parts !! But we didn't know that shallow water was going to make for poor down wind conditions either..... we had 25 knots or so, and I've heard you can still do a good downwinder in Hawaii with 15 knots, as long as you have a decent swell running behind you.... (???)....
Corio Bay Actual Route - as you can see, it was over the shallowest parts !!
(estimated actual route)
That bar you guys paddled over has a bit of history to it. In the 1840's cattle were driven across it & the 2 natural channels that existed at the time. From Pt Lillias (Avalon) to Pt Henry. And about a hundred years ago we used to speed sailboard in it's lee.
And that peninsula where you finished just opposite the school is where rabbits were first introduced to Australia. Some grazier thought he'd like to hunt them so let a few pairs go. Succeeded beyond his wildest dreams 
Thanks for the info guys !
I knew it was going to shallow off Point Henry, but I/we didn't realise that is would be shallow for so far !
I preferred to speed sail on the eastern end of Lake Connewarre, as I grew up in Brinsmead Lane ! Quite shallow though, so I used to use a fat short fin.
Apparently it took several goes with the bunnies until they found some that would survive. The first were domestic rabbits and they all died out. Eventually they found some tough Spanish rabbits that could survive and the rest is history.
Thomas Austin introduced rabbits on his property, Barwon Park at Winchelsea in 1859.
Lake Connewarre - I learnt to kitesurf there in 2000. One day one of the locals suggested it might not be good idea as it was the first day of duck season!!!!
